Screw-press



J. DEININGER.

SCREW PRESS.

APPLICATION FILED MAY 12,1914,

Patented Sept. 28, 1920.

JOHN DEININGER, OF BLAUBEUREN, GERMANY.

SCREW-PRESS.

Specification of Letters Patent.

Patented Sept. 28, 1920.

Application filed May 12, 1914. Serial No. 838,005.

T 0 all whom it may concern:

Be it known that 1, JOHN DEININGER, a subject of the German Emperor, residing at Blaubeuren, Germany, have invented a certain new and useful Improved Screw-Press, of which the following is a specification,

This invention relates to a press, more particularly for use with fruit and wet linen, and of the kind in which a rotating threaded spindle moves up and down in a tubular column located on the bottom of the press and provided inside with a stationary nut for the spindle. The invention consists in the construction of the press bottom in the form of a sheet metal tray stifiened at the lower face by a cone, whereby the tubular column and the spindle nut is strongly secured. The press is of light weight which is essential for household presses, and very rigid, so that the greatest possible pressure can be exercised, which is still further assisted by the method of securing the nut in the column.

A construction according to this invention is illustrated in the accompanying drawing, in which Figure 1 is a vertical section through a fruit press, and

Fig. 2 a horizontal section on line A-B of Fig. 1.

As will be seen, the press bottom consists of a tray 1) stamped out from sheet metal, provided with a cone 0 also of sheet metal and secured for instance by riveting. It is supported on three legs 6. From the said bottom a tubular column a is provided in the interior, and some distance from the edge the nut f is secured for the screw spindle g. The column is reduced in size immediately above the nut, in' order to hold the nut securely against axial pressure. The column is connected to the press bottom (tray 1) and cone 0) for instance by welding, which is facilitated by inserting a tubular piece d. The

tubular column could also be secured for instance by screwing, if the tubular piece (1 is provided with a screwthread.

The remaining part of the press, which, of course, can be constructed in a different manner from that shown in the drawing, will be easily understood by an expert. It may be mentioned that the movable member 0, the screw spindle g, and the double armed lever Z, m can be removed in one piece when filling or emptying the press. The thrust bearing is, a ball bearing (balls u located between loose rings 8 and t). The press casing is marked 2', and h is a grate resting on the press bottom.

The press is preferably secured to a wooden plate which is so large that the attendant must stand thereon, whereby the press does not turn when the spindle is rotated in either direction.

What I claim as my invention and desire to secure by Letters Patent is 1. In a screw press, the combination of a sheet metal tray to form the bottom of the pressure chamber, an inverted metal cone secured on the lower face of the tray, 2. tube secured perpendicularly to the tray and to the cone, a stationary nut located in the tube, a threaded spindle adapted to engage the nut and a pressure plate connected to the spindle, for the purpose described.

2. In a screw press, the combination of a sheet metal tray to form the bottom of the pressure chamber, an inverted metal cone secured on the lower face of the tray, a tube reduced in diameter at its upper end and secured perpendicularly to the tray and to the cone, a stationary nut located in the upper end of the larger diameter of the tube, a threaded spindle adapted to engage the nut, and a pressure plate connected to the spindle, for the purpose described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN DEININGER.

Witnesses WILHELM Orr, FRIDA KLAIBER. 

